Note 12 - Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure Text Block [Abstract]

Schedule of Debt [Table Text Block]

		December 31, 2015		December 31, 2014
Revolving credit facility	$	255,165	$	299,061
3.84% senior secured notes due January 2025		-		150,000
6.40% senior secured notes due September 2015		-		12,500
5.44% senior secured notes due April 2015		-		20,000
Unamortized gain on settlement of interest rate swaps		-		1,828
Adjustments to long-term debt resulting from interest rate swaps		-		27
Capital leases maturing at various dates through 2018		1,870		4,228
Other long-term debt maturing at various dates up to 2018		3,912		5,704
		260,947		493,348
Less: current portion		3,200		36,396
Long-term debt - non-current	$	257,747	$	456,952

Schedule of Maturities of Long-term Debt [Table Text Block]

2016	$	3,200
2017		2,009
2018		388
2019		181
2020 and thereafter		255,169